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(No Model.) 1 N E. M. HAMILTON. JOURNAL BEARING FOR TYPE WRITING. MACHINES. NO. 357,665. Patented Feb. 15,1887.

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UNITED STATES PATENT EMERY M. HAMILTON, OF NEW YORK, N. Y.

JOURNAL-BEARING FOR TYPE-WRITING MACHINES.

SPECIFICATION forming part of Letters Patent No. 357,665, dated February 15, 1887. Application filed April 1, 1886. Renewed December 2, 1886. Serial No. 220.526. No model.)

To all whom, it may concern.-

Be it known that I, EMERY M. HAMILTON, of the city of New York, in the county and State of New York, and a citizen of the United States of America, have invented a new and useful Improvement in J ournal-Bearings for Type-Lever Shafts in Type-Writing Machines, of which the following is a specification, reference being had to the accompanying drawings, forming part of the same, in which- Figure 1 is a plan or face view of a faceplate on which are mounted the type-levers of a type-writingmachine, there being shown in the drawings only four of the entire series of levers employed in such a machine, together with eight of the corresponding series of pillow-blocks on the said face-plate. The other figures, 2 to 10, inclusive, are detail views, which will be more particularly described hereinafter.

My invention relates to the special devices, hereinafter described and claimed, constituting the journal-bearings of two or more rotating shafts, on which are mounted the typelevers of a typewriting machine.

I do not deem it necessary to describe fully a type-writing machine to which my invention is specially applicable, the same being well known as embodying a series of levers arranged radially around a circle, each carrying on its inner end a type, and pivoted so as when the inner end is elevated to bring the type to the center of the circle, where the printing-impression is to be made.

As my invention relates only to the j ournalbearings of the journals by which the levers are hinged to the face-plate of the machine, I limit my description to so much of such machine as will enable a person skilled in the art to understand and construct in said machine the journal-bearing embodying my invention.

A is the face-plate, being a plane circular metal disk. Upon this are formed a series of pillow-blocks projecting from the upper face of the disk and disposed in a circle around the same. They are designated in all the figures by the letter a.

12 indicates the type-levers, that are hinged to or mounted on thesepillow-blocks. In the drawings they are represented as hinged to short. arms 0, which project from shafts d, that are journaled in the pillow-blocks. It is to the journal-bearings in these pillow-blocks that my invention relates. The bearings in the blocks are formed by cutting in them V- shaped grooves, preferably as shown plainly in Figs. 3 and 9, by a right-line groove cut in the upper inner angle of the block. If preferred, however, these V-shaped grooves may be made, as shown in Figs. 4. and 10, directly on top of the pillow-blocks. Each shaft (1 fits in between two adjacent pillow-blocks, and its journals lie in the said V-shaped grooves formed in said blocks. Each block will thus constitute the bearings for the adjacent journals of two shafts one on either side of the block. The journals do not meet in the center of the block, but a space is left between their ends, within which a hole is drilled into the block and tapped to receive a screw, which is provided with a broad head. The head, when the screw is turned down, projects over the ends of the journals, and thus constitutes a cap for both of the same. The said screws are designated in the drawings by the letter 72. The sides of the V-shaped groove and the said screw-head will thus together touch each journal at three points, constituting a bearing that will hold the journal steady and prevent all side motion. The bearing in any one of the pillow-blocks may be readily tightened or loosened by simply turning down or back the screw h in such block.

I have represented in the drawings the typelevers hinged to the cranks secured on the shafts d, with belts and a spring connected to each crank, whereby the shaft is rocked in its hearings to actuate the lever hinged to the crank. These devices are shown plainly in Fig. 2, which is a side view of a lever, 12, crank c, pillow-block a, spring 8, and beltst t, and a broken section of the faceplate. By pulling down on the belt t a half-revolution may be given to the crank, and the spring acts to give the reverse motion. The lever being fulcrumed (fulcrum not shown) intermediate the ends, is by the movement of the crank carried inward toward the center of the faceplate, and the inner end is at the same time carried downward during the first half of the movement of 100 the crank and carried upward during the latter half; but I make no claim here for this lever movement, that being made in a separate application for a patent which I file in the Patent Office simultaneously herewith.

Figs. 3 and 4 are detached side views of two of the pillow-blocks severally on a broken section of the face-plate, and showing the two forms of the V-shaped groove hereinbefore described. Fig. 5 is a detached plan view of a piece of the faceplate, and a number of the pillow-blocks with the lever crank and shaft. Fig. 7 is a side view of one of the cranks connected to its shaft, together with a spring, 3, and belts t t. Fig. 6 is a side view of one of the levers detached. Fig. 8 is a top view of the parts shown in Fig. 7 Fig. 9 is a vertical section (on a broken section of the plate) of one of the pillow-blocks, showing also a section of the shaft-journal f and the screw-cap h, and Fig. 10 shows a similar section of a pillow-block with the V-shaped groove out directly on the top.

It is obvious that the levers may be mounted directly on the shafts d, if the peculiar motion of the lever described, which is accomplished by the crank, is not desired.

What I claim as my invention, and desire to secure by Letters Patent, is-

The combination of a series of shafts, d, provided with journalsf, with a series of pillowblocks, a, provided with V-shaped grooves and broad-headed screws 71, the whole constructed and arranged, as described, so that each pillow-block constitutes the journal-bearing of the adjacent journals of two of said shafts and the head of each screw it serves as the cap of two adjacent journals, as and for the purpose specified.

EMERY M. HAMILTON.

\Vitnesses:

A. G. N. VERMILYA, A. S. FITCH. 

